Using Extensions with Selenium (Python)

The leading answer didn’t work for me because I didn’t realize you had to point the webdriver options toward a .zip file.

I.e. chrome_options.add_extension('path_to_extension_dir') doesn’t work.
You need: chrome_options.add_extension('path_to_extension_dir.zip')

After figuring that out and reading a couple posts on how to create the zip file via the command line and load it into selenium, the only way it worked for me was to zip my extension files within the same python script. This actually turned out to be a nice way for automatically updating any changes you might have made to your extension:

import os, zipfile
from selenium import webdriver

# Configure filepaths
chrome_exe = "path/to/chromedriver.exe"
ext_dir = 'extension'
ext_file = 'extension.zip'

# Create zipped extension
## Read in your extension files
file_names = os.listdir(ext_dir)
file_dict = {}
for fn in file_names:
    with open(os.path.join(ext_dir, fn), 'r') as infile:
        file_dict[fn] = infile.read()

## Save files to zipped archive
with zipfile.ZipFile(ext_file), 'w') as zf:
    for fn, content in file_dict.iteritems():
        zf.writestr(fn, content)

# Add extension
chrome_options = webdriver.ChromeOptions()
chrome_options.add_extension(ext_file)

# Start driver
driver = webdriver.Chrome(executable_path=chrome_exe, chrome_options=chrome_options)
driver.get("http://stackoverflow.com")
driver.quit()

If you wanna import any chrome extension in your selenium python scrip

1. Put your extension.crx.crx file in the same folder as your code or give the path

2. you can copy-paste this code and just change the file crx.crx name

   import os
   from selenium import webdriver
   from selenium.webdriver.chrome.options import Options

   executable_path = "/webdrivers"
   os.environ["webdriver.chrome.driver"] = executable_path
   
   chrome_options = Options()
   
   chrome_options.add_extension('  YOUR - EXTIONTION  - NAME    ')
   
   driver = webdriver.Chrome(chrome_options=chrome_options)
   driver.get("http://stackoverflow.com")
   

if this code is throwing an error maybe this will solve it

I also needed to add an extention to chrome while using selenium. What I did was first open the browser using selenium then add extention to the browser in the normal way like you would do in google chrome.

This is because the selenium expects the packed extensions as the extension argument which will be with .crx extension.

I already had the extension in my chrome. Below are the steps I followed to pack the existing extension,

1. Click on your extension ‘details’. In my Chrome version, it was on right top click (3 dots) -> 'More tools' -> 'Extensions'.
2. Have the developer mode enabled in your chrome
3. Click ‘Pack extension’ (As shown above) and pack it.
4. This will get stored in the extensions location. For me it was on /home/user/.config/google-chrome/Default/Extensions/fdjsidgdhskifcclfjowijfwidksdj/2.3.4_22.crx

That’s it, you can configure the extension in your selenium as argument.

extension='/home/user/.config/google-chrome/Default/Extensions/fdjsidgdhskifcclfjowijfwidksdj/2.3.4_22.crx'
options = webdriver.ChromeOptions()
options.add_extension(extension)

NOTE: You can also find the ‘fdjsidgdhskifcclfjowijfwidksdj’ id in the extensions url as query param

An alternative way is to use the unpacked folder method. I found the crx and zip method did not work at all on Selenium Grid. In this method, you need to copy the extension from the user data in a Chrome version where you have already manually installed it, the long ID made up of loads of letters like pehaalcefcjfccdpbckoablngfkfgfgj, to the user data directory of the Selenium-controlled Chrome (which you can choose at runtime using the first line of this code, and it will get populated automatically). It should be in the same equivalent directory (which is Extensions). The path must take you all the way to the directory where there is a manifest.json, hence in this example ‘1.1.0’

chrome_options.add_argument("user-data-dir=C:/Users/charl/OneDrive/python/userprofile/profilename"
unpacked_extension_path = 'C:/Users/charl/OneDrive/python/userprofile/profilename/Default/Extensions/pehaalcefcjfccdpbckoablngfkfgfgj/1.1_0'
chrome_options.add_argument('--load-extension={}'.format(unpacked_extension_path))
driver = webdriver.Chrome(options=chrome_options)   

I’ve found the simpliest way ever.

So no ways were working for me, I tryed to make a crx file and more but nothing worked.
So I simply added the unpacked extension path like that:

options.add_argument('--load-extension={}'.format("HERE YOUR EXTENSION PATH"))

Replace the HERE YOUR EXTENSION PATH, by the path of your extension which is in one of your Chrome profiles.
To find it use this path on windows:
C:Users[login_name]AppDataLocalGoogleChromeUser DataDefaultExtensions

Then you have to choose the folder of the extension, it’s by ID which you can find in the https://chrome.google.com/webstore/category/extensions, just type there your extension name and in the URL you’ll get the ID.
Then there in this folder there will be the version of your extensions like: 10.0.3 choose it and it will be your path, so the path must end with the version.

Example:

options.add_argument('--load-extension={}'.format(r'C:UsersnevoAppDataLocalGoogleChromeUser DataDefaultExtensionsnkbihfbeogaeaoehlefnkodbefgpgknn10.20.0_0'))

Note the "r" before the string to make it as raw, or I had to doble the backslashes.

And it works!